Drop-box-actuating mechanism for looms



A. D. GARGULINSKI DROP BOX ACTUATING MECHANISM FOR LOOMS Oct. 14- 1924,

g Sheets-Sheet l W w. WW W W Filed Dec. '7, 1921 Oct. 14 1924.

A. D. GARGULINSKI DROP BOX ACTUATING MECHANI SM FOR LOOMS 7 1921 2 Sheets-Sheet 2 Filed Dec.

Patented Oct. 14, 1924.

. UNITED STATES 1,511,457- PATENT OFFICE.

ANTHONY ID. GARG-ULINSKI, OF WORCESTER, MASSACHUSETTS, ASSIGNOR '10 CROMP TON 8o- KNOWLES LOOM WORKS, A CORPORATION OF MASSACHUSETTS.

DROP-BOX-ACTUATING MECHANISM FOR LOOMS.

Application filed December 7, 1921.

To all whom it may concern:

Be it known that I, ANTHONY D. GAR- oULINsxr, a citizen of the Republic of Poland, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Drop-Box- Actuating Mechanism for Looms, of which the following is a specification.

This invention relates to mechanism for vertically positioning the shuttle boxes of a drop box loom, and it is the general object of the invention to improve and simplify the mechanism through which the boxes are thus positioned.

It is customary in four-box looms to provide two pattern-controlled levers for each set of boxes and to so connect these levers to a drop box lifter rod that four difierent vertical positions of the rod may be determined by the combination of two operative positions of each lever.

My invention relates specifically to an improved construction and combination of parts by which motion may be transmitted from the positioning levers to the lifter rod. Another feature relates to an improved arrangement of giveway connection between the positioning levers and the lifter rod. Certain features of my invention are also applicable to a two-box loom in which only two different vertical positions of the lifter rod are required. Further features of my invention will be more specifically defined in the appended claims.

Preferred forms of my invention are shown in the drawings, in-which- Fig. 1 is a side elevation of portions of a loom with my improved drop box actuating mechanism mounted thereon;

Fig. 2 is a detail sectional plan view taken along the line 22 in Fig. 1;

Fig. 3 is a side elevation of the yielding link or giveway connection; for the drop boxes at the right side of the loom;

Fig. 4 is a detail front elevation thereof;

Fig. 5 is a partial side elevation showing my invention applied to a loom using only two drop boxes at either end of the lay; and

Fig. 6 is a detail front elevation looking in the direction of the arrow 6 in Figs. 1 and 2.

Referring to Figs. 1 to 4, T have shown portions of a loom side 10, a drop box lifter rod 11 and a pair of bell crank positioning levers 12 and 13. The levers 12 and 13 are mounted upon a fixed pivot 14 and are con- Serial No. 520,681.

nected by links 15 and 16 to pattern-controlled mechanism of the usual type by which the upper ends of the levers may be shifted forward and rearward as desired.

The parts thus far described are of the usual type and form no part of my present invention.

In order to combine the movements of the levers 12 and 13 to determine the four different vertical positions of the lifter rod 11, I provide a lever 17 which has no fixed center and which may accordingly be designated as a floating lever and which is provided with three bearing or connecting portions 18, 19 and 20. The bearing 18 is pivoted to the forwardly extending arm of the bell crank 13. The end portion 19 has a pin and slot connection with the rearwardlyextending arm of the bell crank lever 12 and the end portion 20 has a giveway link connection with a stud 21 at the lower end of the lifter rod 11. This giveway link preferably comprises two members 22 and 23 (Fig. 3) pivotally connected near their lower ends and yieldingly connected at their upper ends as by a spring 24;. Recesses 25 are formed in the adjacent faces of the members 22 and 23 to receive a stud 26 formed on the end portion 20 of the lever 17.

With these connections, the lifter rod 11 will be given four different vertical positions in accordance with the four possible combinations of the two positions of eachof the levers 1,2 and 13. The giveway link not only permits yielding of the parts in case vertical movement of the shuttle boxes is prevented, but also allows for the necessary swinging movement of the lifter rod with the lay and for the varying transverse posi tion of the end portion 20 as determined by the combination of the positions of the levers 12 and 13.

The connections for the opposite side of the loom are also indicated in the drawings, these connections comprising a second pair of positioning levers 30 and 31, a floating lever 32, a link 33, arms 34 and 35 fixed to a rock shaft 36, and a similar giveway connection between the arm 35 and the associated lifter rod. The relative proportions of the parts will be found identical although the dimensions are reduced to provide necessary clearance.

It has been found desirable by experiment that the points 18, 19 and 20 should be positioned in a single straight line and that they should be equally spaced. While I do. not wish to be limited to this specific arrangement and proportion, it is at present considered the preferred arrangement for this form of my invention.

Certain of the advantages of my invention are of value when used in a loom using two shi ttle-boxes at one or both sides of the loom. The construction in this case is somewhat s mp ifie a i b evident y reierence to Fig. 5. In this form of my invention, a lever l is mounted on a pivot ll supported in fixed position by the frame A single bell crank lever 42 is mounted on a fixed pivot 43 and is connected by a ll to the rear end of the lever 40. The connections from the front end of the lever i0 to the lifter are the same as shown for lever 1;? in Fig. 1. The upper end of the bell crank 40, is also similarly connected by "a link 45 to an actuating disc not shown.

Provision for the necessary sliding moveent of the lever 40 may be made by providing "a slot 46 in the lever 42 to receive the pivot stud 4A. As the upper end of the lever i2 is moved to forward or rearward position, the shuttle-boxes are shifted to bring either the upper or lower box in line \vith'the picker.

have also shown in Fig. 5 a second lever 4:7 pivoted to a stud l8 fixed in the frame 10 and actuated bya bell crank lever 4:9 through a sliding connection 50 to move the boxes at the opposite side of the 100111 by conneetions-simi-l'ar to those shown in Fig. 1.

The words directly pivoted or directly connected as used in the claims indicate that the, parts thus defined are pivoted or connecteddirectly to each other without the intervention of links or other additional and relatively movable parts.

It will be evident that changes and modifications can be made in my invention wit-hin the spirit and scope thereof as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed but what I; claim is 1. I n a loom, a drop box lifter rod, a pair of positioning levers, "a floating lever pivoted directly to one lever and having a direct sliding engagement with the other lever and a connection from said lever to. said lifter rod. Qalln a loom, a drop box. lifter rod, a pair of positioning levers having corresponding portions extending in opposite directions, a floating lever directly connected adjacent its center to one positioning lever and adjacent one end the. second positioning lever, and a link connecting the other end of said floating lever to said lifter rod.

3. In a loom, a drop box lifter rod, a pair of positioning levers having corresponding portions extending in opposite directions, a floating lever directly pivoted adjacent its center to one of said positioning levers and havinga pin and slotconnecti-on one end to the second positioning lever, and a link connecting the other end ofsaid floating lever to said lifter rod.

4. In a loom, a drop box lifter rod, a pair of positioning lever-s having corresponding portions extending in opposite directions, a floating lever directly pivoted adjacent its center to one of said positioning levers and having a pin and slot connection at one end to the second positioning lever, and .a-link pivoted to said lifterrod and having a give Way connection to said floating lever.

5. In a loom, a drop box lifter rod, a pair of positioning levers, a floating lever directly and jointly supported by said positioning levers, a link connecting said floating lever to said lifter rod, and selective means to move said positioning levers, the points of pivotal connection of said floating lever to said; positioning levers and said link being substantially in 'a single straight line.

6. In a loom, a drop box litter :rod, a pair of positioning levers, a floating lever direct ly and jointly supported by said positioning levers, a link connecting said floatinglever to said lifterrod, and selective means to move said positioning levers, the points of pivotal connection of said float-ing lever to said positioning levers and said link being substantially in a single straight line and equally spaced. 7

7. In a loom, a drop box lifter rod, a positioning lever, a p-ivotally supported lever having a positive direct connection to said positioning lever at one end, a yielding giveway connection to saidlifter red at the 0pposite end, and means to move said positioning lever.

In testimony whereof I have hereunto affixed my signature, 1

ANTHONY D. GARGULINSKI. 

